Oval pools call for an oval cover, and that is what this is: the Solar Pool Cover from Didak Pool in the size for oval pools of 4.27 by 2.50 metres. The box has it as 'fit oval pool', with the cover size 397 x 230 cm alongside.
The material is the blue insulating bubble film Didak uses for its solar covers: film with small air pockets that, according to the manufacturer, catch the sun and pass the heat on to the water. The box shows this as a drawing, with a sun and arrows going through the water surface.
That the cover is smaller than the pool is the intention. It keeps the film lying free on the water instead of riding up against the wall. Lay it on when nobody is swimming and take it off again before going in — nothing has to be fastened, it floats by itself.
The oval pool in the packaging photo is scenery: what you buy here is the cover alone. Measure your own pool before choosing; other sizes exist for round and rectangular pools.
